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General Tech Bugs & Fixes 2 years ago
Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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I have a script which takes uploaded data, munges it together, turns it into a plot (using Bokeh) and then href="https://forum.tuteehub.com/tag/exports">exports it to a directory as JSON.
At some point in the future, a user can hit the right URL and the appropriate plot should be displayed to the user as part of the HTML template.
I can generate the plot. I can save it as JSON. I can get the URL to retrieve it as JSON, but I cannot get the JSON plot to render within the template.
I've had a dig around the Bokeh documentation and examples, but they all seem to use a flask app to serve the pages.
I think I'm on the right track, using views.py to find and return JSON as part of a render() response, and then have Bokeh.embed.embed_items() do the work in the template to make it look right, but it's not working out - everything but the plot is displayed.
render()
Bokeh.embed.embed_items()
1) Create the plot and puts it in the directory for later use (app/href="https://forum.tuteehub.com/tag/result">results/1)
create plot.py
import os import json from django.conf import settings from bokeh.embed import json_item from bokeh.plotting import figure x=[1,2,3,4,5] y=[0,-1,-2,3,4] p=figure(title="test_example") p.line(x, y) json_export = json_item(p, "href="https://forum.tuteehub.com/tag/result">result") with open(os.path.join(settings.RESULTS_DIR,"1", "test.json"), 'w') as fp: fp.write(json.dumps(json_export))
2) Set up the url
urls.py
urlpatterns=[ path('href="https://forum.tuteehub.com/tag/result">result/', views.href="https://forum.tuteehub.com/tag/result">resultdetailview, name='href="https://forum.tuteehub.com/tag/result">result-detail'), ]
3) Take the request, use the pk to find the plot json and render it all in the appropriate template.
views.py
def href="https://forum.tuteehub.com/tag/result">resultdetailview(request, pk): href="https://forum.tuteehub.com/tag/result">results=str(pk) with open(os.path.join(settings.RESULTS_DIR, href="https://forum.tuteehub.com/tag/result">results, "test.json"), 'r') as fp: data=json.load(fp) context={'href="https://forum.tuteehub.com/tag/result">result':data} return render(request, 'app/sandbox_detail.html', context)
NB: If I instead use return JsonResponse(data, safe=False) then the url returns the json successfully ...
return JsonResponse(data, safe=False)
I think therefore that the issue is in the template.
4) Show the wonderous plot to the user
sandbox_detail.html
<header> <link rel="stylesheet" href="http://cdn.pydata.org./bokeh/release/bokeh-0.11.1.min.css" type="text/css" > <script type
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